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SkyWatch
January 1, 2012, 11:19 AM
The cylinders on my Heritage .22 look the same as far as size. They are marked differently in order not to get them mixed up, but what is the difference in how each fires since they are the same size? One shell is longer, but the cylinders are the same length. Anyone have the logical explanation? Just curious.

bossman
January 1, 2012, 11:34 AM
The cylinder bore are cut to different lengths. The 22 mag won't fit in the 22lr cylinder.

claymore1500
January 1, 2012, 12:32 PM
.22mag cases are slightly larger in diameter and will not fit in the lr. cyl., also, the .22lr cases will be sloppy in the mag cyl.

Try this if you like, take a .22lr empty and a .22mag. empty, then take the .22lr. and push it into the open end of the mag case, it fits and this will give you an idea of the difference.

denster
January 1, 2012, 12:56 PM
The .22 uses a heeled bullet. That is a reduced diameter that goes inside the case. The case diameter is the same as the major bullet diameter. The 22 Mag uses a full diameter bullet full length where the inside of the case is the same diameter as the bullet and the outside of the case is larger.

SkyWatch
January 1, 2012, 01:26 PM
Thanks!

Slowhand
January 1, 2012, 01:41 PM
http://i694.photobucket.com/albums/vv308/bgoff689/weapons/22rounds.jpg

http://i694.photobucket.com/albums/vv308/bgoff689/weapons/rimfirecomp.jpg

Here are a couple of pictures that add a bit of information.

Walklightly
January 1, 2012, 08:32 PM
I know the 22LR bullet is wider than the shell, not the base/rim. Is it the same with the 22mag? In the pictures it doesn't look that way. I guess I could dig out my 22mag ammo I bought by mistake and compare, but that's to easy.

It just gives me an excuse to buy a 22mag gun.:D

customaquatics
January 1, 2012, 08:34 PM
the size of the bullet at least with my ruger i was told the bore is like .03" bigger for the size of the .22 magnum which is why the .22 LR is a little less accurate then the .22 magnum round.

FrankenMauser
January 1, 2012, 09:25 PM
I know the 22LR bullet is wider than the shell, not the base/rim. Is it the same with the 22mag? In the pictures it doesn't look that way. I guess I could dig out my 22mag ammo I bought by mistake and compare, but that's to easy.

.22 LR projectiles should measure .222", while the casing (hull) should be .225-.226" and cylindrical (not tapered). .22 LR projectiles are heeled, and marginally smaller than their casing, to provide reliable feeding with a thin wax coating on the bullet.

.22 WMR projectiles measure .224", while the casing should be .240-.242" and cylindrical (not tapered). .22 WMR projectiles are "standard" projectiles, and are full diameter. As such, the casing is "wider" than the bullet.


the size of the bullet at least with my ruger i was told the bore is like .03" bigger for the size of the .22 magnum which is why the .22 LR is a little less accurate then the .22 magnum round.
The accuracy issues are theoretically correct, but the difference in diameter is only 0.002". As you can see above, the .22 LR uses .222" bullets; and the .22 WMR uses .224" bullets. Although there are rare claims of .223" bore on older Ruger revolvers, most barrels should slug to .224".

customaquatics
January 1, 2012, 09:30 PM
o alright i was told it was the 3 in my '76 version but i could of been wrong.